from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of various toxic proteins obtained from certain plants and bacterial cultures.

from The Century Dictionary.

  • noun A poisonous ptomaine; toxin.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Physiol. Chem.) Any of a class of toxic substances of protein nature; a toxin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A protein which is toxic (i.e. organic and poisonous)


from Wiktionary, Creative Commons Attribution/Share-Alike License

From toxin 'organic poison' (from Middle Latin toxicus 'poisonous', from Latin toxicum 'poison (for arrows)', from Ancient Greek (toxikon), from (toxa) 'arrows', from (toxon) 'bow') + albumin 'protein' (from French albumine, from Latin albumen 'egg white', from albus 'white'). The term was first used in about 1890 by the research chemists Ludwig Brieger (1849-1919) and Sigmund Fraenkel (1868-1939).


  • In 1890, L. Brieger and C. Fraenkel prepared, from cultures of diphtheria bacilli, a toxic substance, which they called toxalbumin, which when injected in suitable doses into guinea-pigs, immunized these animals to diphtheria.

    Emil von Behring - Biography

  • Further, the second experiment to be adduced against the specificity of anaphylaxis I conducted with two kinds of toxalbumin, extracted from the Actinia, a substance which I named congestin, as its property is to bring on grave congestion of the circulatory system in the intestines and stomach.

    Charles Richet - Nobel Lecture

  • Phallin is a toxalbumin which destroys the red blood-corpuscles, causing the serum to become red in colour and the urine blood-stained.

    Aids to Forensic Medicine and Toxicology


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